Isotx announced they are accepting application for the upcoming closed beta test of Iron Grip: Warlord, the latest offering in the Iron Grip Universe, now based on the Quake 3 engine and scheduled to be available later this year. The gameplay features both RTS and FPS elements and lets you employ urban guerrilla tactics to fight off your enemies. You must protect your city at all costs, by building defense structures, setting traps and taking the enemy on yourself. If you’re interested in participating in the testing of Warlord, head over here and sign-up.